Scientists study effects of caffeine on exercise performance

(Medical Xpress) -- Whether you are an elite athlete trying to gain a competitive edge, or a regular bike commuter, consuming caffeine one hour prior to exercise has the potential to improve your performance.

Lecturer and with The University of Queensland's School of Human Movement Studies, Dr. Tina Skinner, has recently published the results of her work on the links between caffeine consumption and athletic performance.

"Caffeine's performance-enhancing effect was thought to be related to the levels of the drug circulating within the bloodstream during ,"Dr. Skinner said.

Instead, Dr. Skinner's study of caffeine's impact on athletic performance, found that the time in which caffeine enters the body, not the amount of caffeine in the bloodstream, is the key to enhancing .

For her work, Dr. Skinner has received three awards, including a 2011 Australian Sports Medicine Federation Fellows Award for Best New Investigator in Exercise and .

"It does not seem to matter how much caffeine enters your bloodstream, as long as it is consumed within one hour prior to starting exercise," she said.

Three were carried out on national level male rowers, and triathletes and active healthy males.

Dr. Skinner and her team then examined the influence of the caffeine dose, supplementation timing and post-meal timing on caffeine concentrations in the bloodstream and subsequent exercise performance.

"We found that when caffeine is consumed following a high-carbohydrate meal the amount of caffeine that enters the bloodstream is delayed and concentrations reduced compared to when caffeine is consumed in a fasting state," Dr. Skinner said.

"It appears that it is the proximity of caffeine supplementation timing to the commencement of endurance exercise, rather than the achievement of peak levels of caffeine in the blood stream, that influences the performance-enhancing effects of caffeine," Dr. Skinner said.

However, we was found that individually manipulating the timing of to ensure peak levels were in the bloodstream did not improve endurance exercise performance, she said.

Dr. Skinner hopes the results of this study will have an important role in informing the usage of caffeine in sports and the design of future studies involving caffeine supplementation.

add to favorites email to friend print save as pdf

Related Stories

Caffeine effects on children studied

Apr 26, 2006

Arkansas scientists say they've found caffeine elevates blood pressure and lowers heart rate in children during exercise, but doesn't affect metabolism.

Genetic variants associated with caffeine intake identified

Apr 06, 2011

Two genes in which variation affects intake of caffeine, the most widely consumed stimulant in the world, have been discovered. A team of investigators from the National Cancer Institute, Harvard School of Public Health, ...

Recommended for you

AMA examines economic impact of physicians

8 hours ago

(HealthDay)—Physicians who mainly engage in patient care contribute a total of $1.6 trillion in economic output, according to the American Medical Association (AMA)'s Economic Impact Study.

Less-schooled whites lose longevity, study finds

8 hours ago

Barbara Gentry slowly shifts her heavy frame out of a chair and uses a walker to move the dozen feet to a chair not far from the pool table at the Buford Senior Center. Her hair is white and a cough sometimes interrupts her ...

How to keep your fitness goals on track

9 hours ago

(HealthDay)—The New Year's resolutions many made to get fit have stalled by now. And one expert thinks that's because many people set their goals too high.

Suddenly health insurance is not for sale

Apr 18, 2014

(HealthDay)— Darlene Tucker, an independent insurance broker in Scotts Hill, Tenn., says health insurers in her area aren't selling policies year-round anymore.

User comments